ALEXANDRIA, Va., March 26 -- United States Patent no. 12,262,171, issued on March 25, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).
"Audio spot forming device" was invented by Yusuke Yoshimura (Tokyo), Yuta Ikeguchi (Tokyo), Hisatoshi Kasahara (Tokyo), Atsushi Aratake (Tokyo), Shuichi Yanagi (Tokyo) and Suguru Oguchi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an audio spot formation device D including a speaker unit 1 and a support stand 2 that supports the speaker unit 1, the speaker unit 1 includes a plurality of parametric speakers 1a, 1b, 1c and 1d that divide a sound wave into a carrier wave and a sideband wave and radiate the carrier wave and the sideband wave, and a speak...